There is a lot of excitement about electric cars now. The Chevy Volt, for example, is being touted as providing 240mpg. That is nonsense of course, since the Volt primarily runs off of electricity from the electric grid. (According to what I have read, the Volt gets about 4 mile/kwh.) There are a lot of issues related to the electric power grid associated with widespread use of electric cars. Here is an article discussing the problems.